<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
      <div class="title border-topbottom">当前城市</div>
      <div class="button-list">
        <div class="button-wrapper">
          <div class="button">{{this.currentCity}}</div>
        </div>
      </div>
      </div>
      <div class="area">
      <div class="title border-topbottom">热门城市</div>
       <div class="button-list">
        <div
        class="button-wrapper"
        v-for="item in hotCities"
        :key="item.id"
        @click="handleCityClick(item.name)">
          <div class="button">{{item.name}}</div>
        </div>
      </div>
      </div>
      <div class="area"  v-for="(item,key) in cities" :key="key" :ref="key">
      <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
          <div
          class="item border-bottom"
          v-for="innerItem in item"
          :key="innerItem.id"
          @click="handleCityClick(innerItem.name)">
          {{innerItem.name}}
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import Bscrool from 'better-scroll'
import { mapState, mapMutations } from 'vuex'
export default {
  name: 'CityList',
  props: {
    hotCities: Array,
    cities: Object,
    letter: String
  },
  updated () {
    this.scroll = new Bscrool(this.$refs.wrapper)
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  },
  methods: {
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  computed: {
    ...mapState({
      currentCity: 'city'
    })
  }
}
</script>

<style lang="stylus" scoped>
  @import '~styles/varibles.styl'
  .border-topbottom
    &:before
      border-color: #ccc
    &:after
      border-color: #ccc
  .border-bottom
    &:before
      border-color: #ccc
  .list
    overflow: hidden
    position: absolute
    top: 1.58rem
    right: 0
    left: 0
    bottom: 0
    .title
      background-color: #f5f5f5
      line-height: .56rem
      text-indent: .2rem
      font-size: .26rem
    .button-list
       overflow: hidden
       padding: .1rem .6rem .1rem .1rem
       .button-wrapper
         float: left
         width: 33.33%
         .button
           margin: .1rem
           padding: .1rem 0
           text-align: center
           border: .02rem solid #ccc
           border-radius: .06rem
    .item-list
       .item
         line-height: .72rem
         padding-left: .2rem
</style>
